[Gluster-users] GlusterFS performance

[Nux!]

On 27.02.2013 09:37, Nikita A Kardashin wrote:
> To Replicated gluster volume: 89MB/s
> To Distributed-replicated gluster volume: 49MB/s
> 
> Test command is: sync && echo 3 > /proc/sys/vm/drop_caches && dd
> if=/dev/zero of=gluster.test.bin bs=1G count=1

Hello Nikita,

To me that sounds just about right, it's the kind of speed I get as 
well. If you think of it, what happens in the background is that the 1GB 
file is written not only from you to one of the servers, but also from 
this server to the other servers, so it gets properly 
replicated/distributed.
So depending on your setup, you are not writing 1GB file once, but 3-4 
times, hence the drop in speed.
You could squeeze a bit more out of it if you can create the volumes 
over the servers' secondary nic so servers-to-server traffic goes 
through there.

-- 
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Nux!
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